Oh, you asked about I Am Number Four. In short: it was ghostwritten for James Frey, of A Million Little Pieces fake memoir fame, who is setting up a publishing house with extraordinarily bad, terribly unfair deals for new YA authors, which folks are still inexplicably signing up for.

There's a TON of info on the internets, you can just google it and see, but I think one of the best posts is this one: http://thebitterscriptreader.blogspot.com/2011/02/james-frey-strikes-again-why-you.html